Helminthopsis is the ichnogenus of a type of trace fossil that is found preserved on the bedding planes of fine-grained sedimentary rocks.

It is characterized by short, curvilinear, non-branching, parallel-sided, unlined traces on bedding surfaces.

It is thought to represent the submarine feeding trails of an invertebrate organism that worked the surface of muddy substrates in search of food.

[1][2] Because Helminthopsis traces never cross over themselves, the ichnogenus is distinguished from similar traces assigned to the Gordia ichnogenus.

[3] The similar sounding, but now obsolete, ichnogenus Helminthoida refers to a somewhat similar trace characterized by regular, back-and-forth meanders, whereas Helminthopsis traces are irregular.